code: def setUpClass(cls):
      host = "localhost"
      port = 13620
      scheme = "grpc+tcp"
      location = "{}://{}:{}".format(scheme, host, port)
      cls.arrow_server = FlightServer(host, location)
  
      def start_server():
          pa.start(cls.arrow_server)
  
      _thread.start_new_thread(start_server, ())
      cls.arrow_client = pyarrow.flight.FlightClient(location)
  
file_path: TabPy/tests/integration/test_arrow_server.py
imports: import unittest
  import threading
  import _thread
  import pyarrow
  import os
  import pyarrow.csv
  from tabpy.tabpy_server.app.arrow_server import FlightServer
  import tabpy.tabpy_server.app.arrow_server
label_desc: Use image node_id 1 for calling the TestArrowServer obj's underlying member method code with example usage: obj.setUpClass(cls) without return types